A piston cylinder contains 0.50 kg of air and is fitted with electrical resistor. The mass of the piston is 60 kg and with a face area of 1500 cm2 . The heat transfer produced by the electric current passes through the resistor is 2 kJ that caused the volume to increase by 50 L, while maintaining a constant pressure. At initial and final state, the air and the piston are at rest. Neglect the friction effects between the surface of the piston and the cylinder and take local acceleration due to gravity at standard conditions. Determine the change in internal energy in kJ.

Q: A spring is attached to the back of the frictionless piston. Initially, the spring exerts no force…

A: Given A spring is attached to the back of the frictionless piston. The spring exerts no force on the…

Q: Q4\closed system of 2kg undergoes adiabatic process. The work done on the system is 30000 J. if the…

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Q: Calculate the maximum work obtainable from an (incompressible) body of mass m and thermal capacity…

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Q: A piston-Cx at 400 Ĉ and 300 kpa Compressing the piston in Such that th, produa(p.v) der device…

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Q: At the ceiling height, can you assume the aircraft has minimal power

A: To explain: At the ceiling height, can you assume the aircraft has minimal power.

Q: QUESTION 1 (a) The air inside a 0.2 m² piston-cylinder device initially at 600 kPa. After heated up…

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Q: A piston cylinder containing 0.55 kg helium of 285 ⁰K receives heat at constant temp. until the…

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Q: In a reciprocating air compressor, high pressure air in the cylinder pushes the piston against the…

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Q: The molar mass of an unknown ideal gas is 15 g/mol. Find the mass in kg of 0.2 m3 of this gas at…

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Q: Air is contained in a piston cylinder arrangement shown in the figure. Initially the air is 200 kPa…

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Q: 4. A pump pushes 1000 m³ of liquid water at 15°C up to a reservoir at 200 m higher elevation. The…

A: 4. Given data :

Q: The piston-cylinder system shown in the figure contains water at 1 MPa and 300°C, and secured by a…

A: Note: As per our guidelines we are supposed to answer only the first 3 sub-parts. Kindly repost…

Q: Piston Water A piston cylinder system initially contains 2.0 kg of water at 0.3 MPa ad 20% quality.…

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Q: A refrigeration system uses R 12 as the refrigerant. The system is evacuated, then charged with…

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Q: Derive an equation for work done by the  system  during isothermal expansion process.

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Q: A frictionless piston-cylinder device initially contains 200L of saturated liquid refrigerant-134a.…

A: 1. Given, V1=200LP1=P2=900KPaT2=70°CFrom the steam table Properties of refrigerant R-134a at…

Q: A diesel engine consumes fuel at a rate of 192 kgm per hour at 28°API. For  continuous operation,…

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Q: A 1.5m diameter spherical balloon containing air at 122kPa is cooled such that the volume is reduced…

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Q: Two different piston – cylinder devices each contain 1 kg of air. Initially, the temperature T = 300…

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Q: Benzene at 20 0C is pumped from one storage tank to a reactor (density=878 kg/ m3 ). Volumetric flow…

A: Write the given data with suitable variables.

Q: Find the work done when all the water has been pushed out.

A: Given: A=0.1 m2 T1=300 K V1=0.3 m3 P0=100 kPa vf=0.100 m3/kg TO determine: The workdone

Q: Water with a quality of 53.5% and pressure of 200 kPa is inside a rigid tank.The tank is heated by…

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Q: A spring-loaded piston-cylinder device contains of m=1kg carbon dioxide. Initially, the spring has…

A: Given data:- m=1kg, P1=500kPa, T1=150K, V1=0.1 m3 T2=900K ,V2=0.3 m3 Heat transfer inside the system…

Q: why is quality of vapour 0 for state 3? shouldnt it be 0.5 as the qn stated that half of the…

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Q: Water in piston cylinder system at (T1 and X1). The water is heated isothermally until the (V2=4V1).…

A: Given, initial state of water ,  P1,V1 and T1. State after isothermal heat addition , V2 = 4V1 .…

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Q: Superheated steam at 1.0MPa and 300C inside a cylinder of volume 3.0 liters drives a piston in…

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Q: Q.1) An insulated piston-cylinder de vice contai ns 10 L of saturated liquid water at a constant…

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Q: from Equation bandeaquation a Press Plove that P2 T2 P. fetch while for non-isentropic process,…

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Q: KPa and Is a erature is 696.54 C. Determine the change of internal energy in kJ.

A: GivenVolume=10m3Pressure P1=569.16kpaInitial Temperature T1=429.91KFinal…

Q: A spring-loaded piston-cylinder device contains of m=1 kg carbon dioxide. Initially, the spring has…

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Q: À Piston-cylinder deice contains I Kg of water at 20°c and 300 kPa . There is a linear Spring…

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Q: A closed rigid container has a volume of  1 m3 and holds air at 344.8 kPa and 273 K. Heat is added…

A: Given data: Volume of the tank, V=1 m3

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Q: At 1 kg copper part, initially a 500K is plunged into a tank containing 4 kg of liquid water…

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Q: Q4: A. An ideal gas initially at 30°C undergoes an isobaric expansion at 3kpa. If the volume…

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Q: If in air at 60°C a body cools from 90°C to 80°C in 10 minutes, find the temperature 20 minutes…

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Q: Consider 6.5 kg of air at T1= -53°C in a frictionless cylinder and piston. By applying heat to the…

A: Given: Mass of air=6.5kg The initial temperature of air T1=-53°C or 273-53=220K

Q: A piston-cylinder device initially contains 0.82 m3 of air at 212 kPa and 78.2oC. The air is now…

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Q: container of constant volume contains 10 kg of air at 20 C temperature and 150 kPa pressure. Rough…

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Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.